<template>
  <div id="app">
<!--  <div id="app" :class="typeof weather.main != 'undefined' && weather.main.temp > 16 ? 'warm' : ''">-->
    <main>
<!--      <div class="search-box">-->
<!--        <input type="text"-->
<!--               class="search-bar"-->
<!--               placeholder="Search..."-->
<!--               v-model="query"-->
<!--               @keypress="fetchWeather"-->
<!--        />-->
<!--      </div>-->

      <div class="weather-wrap" v-if="typeof weather.main != 'undefined'">
        <div class="location-box">
          <div class="location">{{ weather.name }}, {{ weather.sys.country }}</div>
          <div class="date">{{ dateBuilder() }}</div>
        </div>

        <div class="weather-box">
          <div class="temp">{{  Math.round(weather.main.temp) }}°C</div>
          <div class="weather">{{  weather.weather[0].main }}</div>
        </div>
      </div>
    </main>
  </div>
</template>

<script>


export default {
  name: 'App',
  data() {
    return {
      api_key: 'ff54f52f567d150907728c79f73b9513',
      url_base: 'https://api.openweathermap.org/data/2.5/',
      query: 'nanjing',
      weather: {}
    }
  },
  methods: {
    fetchWeather() {
      fetch(`${this.url_base}weather?q=${this.query}&units=metric&APPID=${this.api_key}`)
        .then(res => {
          return res.json()
        }).then(this.setResults)
    },
    setResults(results) {
      this.weather = results
    },
    dateBuilder() {
      let d = new Date()
      // let months = [
      //   "一月","二月","三月","四月","五月","六月",
      //   "七月","八月","九月","十月","十一月","十二月"
      // ]
      let days = [
        "周日","周一","周二","周三","周四","周五","周六"
      ]

      let day = days[d.getDay()]
      let date = d.getDate()
      let month = d.getMonth() + 1
      let year = d.getFullYear()

      return `${year}-${month}-${date} ${day}`

    }
  },
  created() {
    this.fetchWeather()
  }
}
</script>

<style>
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "等距更纱黑体 SC", sans-serif;
}

#app {
  /*background-image: url('./assets/cold-bg.jpg');*/
  background-size: cover;
  background-position: bottom;
  transition: .4s;
}

#app.warm {
  /*background-image: url('./assets/warm-bg.jpg');*/
}

main {
  min-height: 100vh;
  padding: 25px;

  background-image: linear-gradient(to bottom, rgba(0,0,0,.25), rgba(0,0,0,.75));
}

.search-box {
  width: 100%;
  margin-bottom: 30px;
}

.search-box .search-bar {
  display: block;
  width: 100%;
  padding: 15px;

  color: #313131;
  font-size: 20px;

  appearance: none;
  border: none;
  outline: none;
  background: none;

  box-shadow: 0 0 8px rgba(0, 0, 0, .25);
  background-color: rgba(255, 255, 255, .5);
  border-radius: 0 16px 0 16px;
  transition: .4s;
}

.search-box .search-bar:focus {
  box-shadow: 0 0 16px rgba(0, 0, 0, .25);
  background-color: rgba(255, 255, 255, .75);
  border-radius: 16px 0 16px 0;
}

.location-box .location {
  color: #fff;
  font-size: 32px;
  font-weight: 500;
  text-align: center;
  text-shadow: 1px 3px rgba(0, 0, 0, .25);
}

.location-box .date {
  color: #fff;
  font-size: 20px;
  font-weight: 300;
  font-style: italic;
  text-align: center;
}

.weather-box {
  text-align: center;
}

.weather-box .temp {
  display: inline-block;
  padding: 10px 25px;
  color: #fff;
  font-size: 102px;
  font-weight: 900;

  text-shadow: 3px 6px rgba(0, 0, 0, .25);
  background-color: rgba(255, 255, 255, .25);
  border-radius: 16px;
  margin: 30px 0;

  box-shadow: 3px 6px rgba(0, 0, 0, .25);
}

.weather-box .weather {
  color: #fff;
  font-size: 48px;
  font-weight: 700;
  font-style: italic;
  text-shadow: 3px 6px rgba(0, 0, 0, .25);
}
</style>
